Results 51 to 60 of about 4,795 (210)

The evolution, distribution and diversity of endogenous circoviral elements in vertebrate genomes [PDF]

, 2018
Circoviruses (family Circoviridae) are small, non-enveloped viruses that have short, single-stranded DNA genomes. Circovirus sequences are frequently recovered in metagenomic investigations, indicating that these viruses are widespread, yet they remain ...
Dennis, Tristan P.W., Gifford, Robert J., Marsile-Medun, Soledad, Singer, Joshua B., Souza, William Marciel de, Wilson, Sam J.   +5 more
core   +1 more source

And then there were none: decrease of origination and the decline of Conulariida

Papers in Palaeontology, Volume 12, Issue 2, March/April 2026.
Abstract Although the evolutionary history of conulariids has been widely studied, previous works have focused mostly on limited time intervals. In this paper, we examine the diversity dynamics of the group throughout its entire history, using various mathematical approaches.
Julio Bernad, Javier Echevarría, Sonia Ros‐Franch   +2 more
wiley   +1 more source

A reappraisal of the Italian record of the Cretaceous pachycormid fish Protosphyraena Leidy, 1857 [PDF]

, 2017
The genus Protosphyraena is known mainly from partial remains, consisting of isolated blade-like teeth, conical rostra and scythe-like pectoral fins. This paper provides a new insight into partial specimens of the genus Protosphyraena from the Cretaceous
Amalfitano, Jacopo, Carnevale, Giorgio, Fornaciari, Eliana, Giusberti, Luca   +3 more
core   +3 more sources

Comparing the Last Interglacial (MIS 5e) with the present interglacial period (MIS 1) using a multidimensional functional diversity analysis: The marine molluscs from Santa Maria Island (Azores Archipelago, central Atlantic) as a case study

Journal of Quaternary Science, Volume 41, Issue 2, Page 333-360, February 2026.
ABSTRACT Marine fossil records hold outstanding importance for ecological, evolutionary and biogeographical studies. Santa Maria Island in the Azores Archipelago (central Atlantic) features a remarkable marine fossil record spanning from the Pliocene to recent times.
Sérgio P. Ávila, Samuel Arruda, Luís Silva, Ana Hipólito, Rui Quartau, Ricardo S. Ramalho, Patrícia Madeira, Carlos S. Melo, Lara Baptista, Ana Cristina Rebelo, Gustavo M. Martins, Gonçalo Castela Ávila, Mohamed Amine Doukani, Esther Martín‐González, Daniele Scarponi, Alfred Uchman, Markes Johnson   +16 more
wiley   +1 more source

Late Mesozoic marine Antarctic fishes: future perspectives based on the newly collections recovered in the Ameghino and López de Bertodano Formations [PDF]

Research & Knowledge, 2017
Nowadays, notothenioids are the teleostean group that dominates marine Antarctic waters. However, during the Mesozoic a diverse ichthyofauna inhabited the sea that surrounded Antarctic.
Soledad Gouiric-Cavalli, Leonel Acosta Burllaile, Ari Iglesias, Juan J. Moly, José P. O´Gorman, Marcelo Reguero, Sergio Santillana, Marianella Talevi, Carolina Vieytes, Mauricio A. Bigurrarena Ojeda, Jorge Lusky   +10 more
doaj   +1 more source

Gondwanan Origin of Bark and Ambrosia Beetles and Their Rapid Worldwide Diversification During the Cretaceous

Journal of Biogeography, Volume 53, Issue 2, February 2026.
ABSTRACT Aim It is not trivial to estimate the relative contributions of dispersal, vicariance, and range contraction in explaining the present‐day distribution of ancient clades. In this study, we aim to infer the historical biogeography of bark and ambrosia beetles using a genus‐level time‐calibrated molecular phylogeny that encompasses 70% of all ...
Jules Ferreira, Fabien L. Condamine, Laura Pajot, David Peris, Bjarte H. Jordal   +4 more
wiley   +1 more source

Phylogenetic paleobiogeography of Late Ordovician Laurentian brachiopods [PDF]

Estonian Journal of Earth Sciences, 2014
Phylogenetic biogeographic analysis of four brachiopod genera was used to uncover large-scale geologic drivers of Late Ordovician biogeographic differentiation in Laurentia. Previously generated phylogenetic hypotheses were converted into area cladograms,
Jennifer E. Bauer, Alycia L. Stigall
doaj   +1 more source

New Glyptodont from the Codore Formation (Pliocene), Falcón State, Venezuela, its relationship with the Asterostemma problem, and the paleobiogeography of the Glyptodontinae [PDF]

, 2018
One of the basal Glyptodontidae groups is represented by the Propalaehoplophorinae (late Oligocene — middle Miocene), whose genera (Propalaehoplophorus, Eucinepeltus, Metopotoxus, Cochlops, andAsterostemma) were initially recognized in Argentinian ...
Aguilera, Orangel, Carlini, Alfredo, Scillato-Yané, Gustavo, Sánchez, Rodolfo, Zurita, Alfredo   +4 more
core  

Taburan fosil dan penilaian semula usia formasi singa di Langkawi, Kedah Darul Aman, Malaysia [PDF]

, 2017
Formasi Singa yang tersingkap di Kepulauan Langkawi terdiri daripada jujukan batuan sedimen argilit dan boleh dibahagikan kepada empat ahli iaitu Rebak, Kentut, Ular dan Selang.
Che Aziz Ali,, Kamal Roslan Mohamed,, Mohamad Hanif Kamal Roslan,, Mohd Shafeea Leman,   +3 more
core   +1 more source

Paleobiogeography of Devonian vertebrates [PDF]

The Paleontological Society Special Publications, 1992
Five distinctive vertebrate faunas characterised by endemic taxa can be recognised for the Early Devonian (Euramerica, Siberia, Tuva, China, and East Gondwana). By Late Devonian time these faunal provinces are obscured by widespread taxa which also inhabited nonmarine aquatic environments, but indicate faunal communication between Gondwana, Euramerica ...
openaire   +1 more source